Pavement felt holder



March 21, 1928.

W. H. KNAPP PAVEMENT FELT HOLDER Filed May 4, 1927 6cm me Q Patented Mar. 27, 1928.

UNITED "STATES v A is 1,664,037 PATENT OFFICE;

WALTER H. KNAPP, or MONROE, MICHIGAN, ASSIGNOR TO THE WILDER-STRONG m ELEMENT COMPANY, or MONROE, MICHIGAN, AcoRroRA'rIon or MICHIGAN.

, PAVEMENT FELT HOLDER.

Application filed May 4,

' My invention has for its object to provide a section tool for dividing plastics used for building purposes into sections, particularly those portions that extend at an angle to the vertical, such as, road beds, pavements, side walks of considerable width, floors of build-' ings, etc., which are commonly divided into sections to allow, for expansion due 'to temperature changes. lo'larly has for its'object to provide a means for temporarily holding the section dividing felt strip of the. type commonly used, and formed of fibrous material that is ordinarily saturated with water-proof material such as tar, oil, etc.

diflicult to place and also to maintain in position, while the pavement is being fo'rmed, owing to their flexibility, and, owing to the fact that a plurality of such strips have to be placed in a section wherethe pavement has a considerable width, such as,'in the case of the pavement of a road, the strips become frequently submerged in the cement composition, or are knocked from their position' by the tools or apparatus that are used, or are disaligned with reference to the parts of the strips of any particular section, and also with reference to the edges of the pavement of the road or flooring or walk, in connection with which the dividing strips". are used, with the result that such felt strips, while theoretically constituting an eX- cellent section separating means for pavements and flooring of different kinds, yet,{

ordinarily, they are useless because of their awkwardness and the difficulty'met with in 'endeavoring to manipulate them and hold them in place so that they will be properly located when the construction or any part 40 of the construction is completed By my invention means is provided for not only dividing the pavement or flooring into sections, but also for holding the divisional felt strips in position while the pavement or flooring is being formed.

The invention may be contained in structures and devices of different forms and to illustrate a practical application of the invention, I have selected a structure containing the invention and shall describe it hereinafter. The structure selected for purposes of illustration is shown in the accompanying drawing.

Fig. 1 illustrates a side view of one section dividing and felt holding tool embodying The invention particu Such felt strips are 1927. Serial no. 188,644.

my invention. Fig. 2 ill strates'a w view of a part of the tool illustrated in Fig; 3 lllustrates a View of a section ofa tool. Fig. 4 illustrates a perspective view of parts of a clamp for securing the felt to the tool. 1

In the form of'construction shown inthe drawing,a metal strip 1 has/portions cut away from its lower edge, leaving, preferably, protruding portions that will extend well into the pavement, that'have edges that slope at an angle to the edges of'the strip and so as to form projecting teeth whereby the section tool may be readily forced into the concrete and drawnfltherefromif desired, and also provides 21 111651118 wherebythe concrete'on opposite sides .of the-'t ool'may frictlonally engage the lower edge portions of a divisional felt strip placed through the recesses in the metal strip along the lower edge of the metal strip and'thus retain the felt strips when the tool is withdrawn.

,In order to reinforce the strip 1, particularly where it isof considerable length, L- shaped irons or strips 3 are bolted to and along the upper edge ofthe metal strip .1. Also, supporting lugs or arms 4 are secured at'the'ends of the strip 1 and, preferably, at I the upper corners of the strip 1, whereby the tool may be supported'on boundary strips 12, usually formed of wood or steel, and for the purpose of forming the side edges of the pavement; Any form of support may be used which is locatedso that when the lugs or arms 4 may rest thereon and the tool be supported so that the lower" sides of the L-strips' or irons 3 are located in the properrelation with reference to the finished surface of the pavement or the flooring. The arms or lugs 4 are, preferably, made of such a length that they may be used as handles in manipulating the pavement tool. Also, the-arms or handles are 'so formed thatthey will support the tool at width, the surface of the pavements invariably slope either to one side or to both sides. The latter is commonly the case in road pavement to produce the desired crown in the pavement for drainage purposes. Consequently, the strip 1 is so shaped that its central portion is raised a material amount above .the ends of the strips 1, and the arms or handles 4 operate to maintain the strip 1 in its upright, position.

Inorderto secure the soft, flexible, fibrous felt in position during. the process of road construction, the felt strip is removably connected to the metal strip 1, and so that upon drawing the metal strip 1 from the pavement, as the sections are formed, the flexible felt-strips willbe left inposition to fill the. spaces between the sections, which, allow for. i the expansion of the sections ofthe 'pavementand at thesame time prevents seepage .of water, and, consequently, the cracking of The felt strip 5 and the metal strip 1 have a width so as to the pavement on freezing.

imbed the felt strip at the desired depth in the pavement. The Width of the felt strip, preferably, is substantially the width of that portion of the metal striplocated below the angle irons or strips 3, and means is providr vAny suitable means ed for securing the felt strip along one sideof the metal strip and below one of the angle irons 3.

In the form of construction shown, a cam member, or exaxially supported cylinder 7, is

rotatably connected to a laterally extending flange of one of the L-members or strips 3. The clamping member 7 has a projection 8 that is located eccentrically with respect to the end of thecylinder member 7, and a head 9 is connected by means of a pin 10 to. the projection 8.

In assembling the. cam members whlch are distrlbuted along the strip 1, the projections 8 are inserted through openings formed in alaterally extending flange of one of the L-members or strips 3, and the heads 9 are then secured to the projections 8 by the pins 10 and so as to locate the head 9 on the upper side of the laterally extending flange of the L-member 3 to Which it is connected. The body of the.

cam member 7 projects. downward from the flange and in position to grip the upper.

edge portion of the felt strip when the head 9 is rotated. This causes the cylinder portion 7 of the cam member to press portionsof the felt strip 5 against the side of the metal strip 1. The felt strip ordinarily is may be used for temporarily securing the felt strips in position.

divided into relatively short lengths of 5 feet or thereabout, and the cam members 7 are distributed along the strip 1 so as to engage each of thesections of the felt strips at, preferably, two points and thus temporarily secure the felt strips 5 to the metal strip 1. p r

The tool is then placed in position and as the material is applied to the road in the formation of a pavement, it will settle about the felt strip 5 andthe metal strip 1 and P engage on both sides of the felt strips eat those portions of the, feltstrip between' 'the teeth 2." Thus the teeth 2 form a means for permitting, the material of the pavement to secure and retain the felt strip in theposition in which'it is temporarily held by'the metal strip 1,; W'hen, therefore, the edge 1. In a tool for locating a fibrous strip to form a flexible jointfor pavements and 'the like, a thin metallic strip, means for supporting the ends of the metallic strip, aspair ofL-irons clamped against opposite sides of the metallic strip and located along one edge 7 .thereof, a plurality of cams for removably "connecting the strip of fibrous material to the metallic strip and rotatably supported in one of the L-irons I r i 2. In a tool for locating a fibrous strip to ..form a'flexible joint for pavements and the like,. athin metallic st rip, means for sup- .portingthe ends ofthe metallic strip, aapair of Liro'ns clamped against opposite sides of i the metallic strip and located along one edge thereof, the lateral extending fiangeslocated below the level of the top of the completed pavement for forming a channel in the pave ment and extending acrossthe pavement, a

plurality of cams for removably connecting the strip or fibrous material to the metallic strip, and rotatably supported in one 'ofthe L-irons.

In witness my name to this specification.

WALTER KNAPVRI whereof I. have hereunto signed 

